Click on the third or sixth rank to set the en passant target square.

Book: ∞ / 0

# move proof disproof
1 f4 0
2 d4 0
3 Nd7 0
4 a5 0
5 Na6 0
6 g6 0
7 Kf7 0
8 Kd8 0
9 g5 0
10 Nf6 0
11 a6 0
12 Kd7 0
13 h5 0
14 Nh6 0
15 h6 0
16 e6 0
17 e5 0
18 Nc6 0